Studi pengaruh kemiringan sudut terhadap angka keamanan lereng dengan perkuatan geotekstil

Abstract

A slope is an inclined land surface from a higher point to a lower point. Slopes are usually formed due to excavation for construction or naturally formed due to landslides. Slope reinforcement is a way to ensure stability and safety against landslides. One of the commonly used reinforcement methods is the use of geotextiles. The advantages of using geotextiles for reinforcement are ease of implementation, cost-effectiveness, and the ability to enhance slope stability actively. The stability analysis of slopes is conducted to assess whether a slope is stable and safe from landslides. Slope stability analysis can be performed using empirical or numerical calculations. Numerical analysis is conducted using the GeoStudio program. This research studies the influence of slope angles on the safety factor. The analysis is performed using five different methods: the Ordinary Method, the Bishop Method, the Janbu Method, the Morgenstern-Price Method, and the Spencer Method in the GeoStudio software. Based on the results obtained from three slope angle variations (60°, 65°, and 75°) under a factory's live load and using the five methods in the GeoStudio program, the slopes are classified as unsafe with SF <1.5. After planning reinforcement with Hibritex Geotextile LP75/75 and applying it to the slopes with the three angle variations, the resulting safety factors are classified as stable and safe with a safety factor >1.5.